NGK 2641 Spark Plug

NGK DCPR9E Spark Plug for Ferrari V12 Applications

The NGK Standard Spark Plug 2641 is built for precise ignition performance in select Ferrari applications, including the 456 GT, 550 Maranello, and 612 Scaglietti. With a copper core center electrode, nickel tip materials, and a 5,000 ohm resistor, this plug supports stable spark delivery and consistent combustion in OE-style tune-ups.

Key Features

• NGK Standard Spark Plug, part number DCPR9E / stock number 2641
• Copper core center electrode for dependable heat transfer
• Nickel center and ground electrode tip materials
• Standard ground electrode design with one ground electrode
• 5/8 hex size, 12 mm thread diameter, .75 reach, flat seat
• Pre-gapped at .036 inches; fitment notes call for 0.028-inch gap on listed Ferrari applications
• Non-removable nut terminal for conventional ignition connections
• Manufacturer heat range 9

Product Details

NGK has long supplied original equipment spark plugs for domestic and import vehicles, and the DCPR9E reflects that OE-focused approach with a standard configuration and durable electrode construction. This plug is intended for Ferrari models that specify the DCPR9E application, including Ferrari 456 GT, Ferrari 456 GTA, Ferrari 456 M GT, Ferrari 456 M GTA, Ferrari 550 Maranello, Ferrari 575 M Maranello, Ferrari 612 Scaglietti, Ferrari Superamerica, Ferrari 512 M, and Ferrari 512 TR. The part number 2641 is also referenced as DCPR9E for identification during service and catalog lookup.

This part cross-references Anchor (e.g., 2641, 3313) for the same application.

What It Helps Address

• Hard starting caused by worn or fouled spark plugs
• Rough idle from inconsistent ignition output
• Misfire symptoms under load or during acceleration
• Reduced fuel efficiency from degraded spark performance
• Service replacement needs on Ferrari ignition maintenance intervals

Installation Notes

Verify the vehicle application before installation and confirm the specified gap for the exact Ferrari model. Listed fitment notes call for a 0.028-inch gap on the covered Ferrari applications, which differs from the .036-inch pre-gap specification shown for the plug. Use the correct torque procedure for the cylinder head material and inspect ignition wires or coils during service. Compatible With 1992-2010 Ferrari models listed in the fitment data, including Ferrari 456 GT, Ferrari 550 Maranello, and Ferrari 612 Scaglietti.

Quality Assurance

NGK is a major OE spark plug supplier with extensive North American manufacturing and distribution support. The DCPR9E is produced to maintain original equipment standards for durability and operational performance in the applications listed.